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Finding the Fourth Proportional to 8,742.03, 12,056.07 and 5,756.76

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Solution

The fourth proportional to 8,742.03, 12,056.07 and 5,756.76 is: 7,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.03 : 12,056.07 = 5,756.76 : x
  2. Step 2: Convert to fraction form
    8,742.03/12,056.07 = 5,756.76/x
  3. Step 3: Cross multiply
    8,742.03x = 12,056.07 × 5,756.76
  4. Step 4: Simplify right side
    8,742.03x = 69,403,901.53
  5. Step 5: Solve for x
    x = 69,403,901.53/8,742.03
  6. Step 6: Final answer
    x = 7,939.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.